This is the second Gregg Shorthand version of Hamlet written in Gregg Shorthand. This version was published in December 1931 to match the 1929 Anniversary Gregg Manual. The shorthand plates are by Winifred Kenna Richmond.
This 1931 book entered the public domain as soon as it was first published. There is no copyright notice in the book. Any book first published in the US before January 1, 1978, without a proper copyright notice immediately went into the public domain at the time of publication. There are also no copyright notices in any of the other individual Gregg Shorthand novel versions of existing works, such as Alice in Wonderland, Rip Van Winkle, the Great Stone Face, etc. All copyrights belonged to the original material. Back then, the US Copyright Office did not allow Gregg to copyright shorthand novels based on existing literary works.It you look at the right side of the illustration on the Page 1 shorthand plate, you will see "Oct 1931." The "L" in the publisher's code indicates December. So this book likely came out in December 1931. The first version of Hamlet in Gregg Shorthand was published around 1915 to match the 1902 Gregg Shorthand Manual. The English text version of this book is found in the chapter "Hamlet: Prince of Denmark" from "Tales of Shakespeare" (1807) by Charles and Mary Lamb. Here is a link to a public domain version of the English text: http://www.archive.org/details/talesfromshakesp00lamb